La Vall\u00e9e de Zermatt (VS) est un terrain id\u00e9al pour \u00e9tudier les risques naturels en montagne. Jeudi, la nouvelle chaire d\u00e9di\u00e9e de l’Universit\u00e9 de Gen\u00e8ve (UNIGE) a pr\u00e9sent\u00e9 ses recherches \u00e0 Gr\u00e4chen, dans le Haut-Valais.<\/p>\n
Direction le ‘Ritigraben’, un site embl\u00e9matique pour \u00e9tudier les laves torrentielles, sur lesquelles se focalise la chaire dirig\u00e9e par Markus Stoffel. Ici, plus de 127 \u00e9v\u00e9nements ont \u00e9t\u00e9 repertori\u00e9s depuis 1570, explique le professeur de l’UNIGE. Au fur et \u00e0 mesure, le lit du torrent s’est creus\u00e9 de plusieurs m\u00e8tres.<\/p>\n
Le site fait partie des lieux \u00e9tudi\u00e9s par l’\u00e9quipe de la chaire, qui cherche \u00e0 ‘mieux comprendre \u00e0 quel degr\u00e9 le changement climatique va influencer ces processus et comment.’ Il s’agit aussi de donner \u00e0 la population et aux autorit\u00e9s la possibilit\u00e9 de se pr\u00e9parer.<\/p>\n
Co-financ\u00e9e par le Fonds AXA pour le Progr\u00e8s humain et l’UNIGE, la chaire dispose d’un budget de 2,5 millions de francs. Sept scientifiques r\u00e9aliseront les recherches sur 5 ans.<\/p>\n
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